Thanks for your query.
Michelle, if this is making you sad and affecting your relationships, maybe you need to do some kind of therapy (with a psychologist
, for example). I think that a lot of the problem you have is about the pressure. When people complain about you, and tell you that you need to talk, it only worsens the problem, and that's why I suggest a professional approach.
To be honest with you, I was not very different from you on that age. I was a good student, but had few friends and was extremely shy. It only changed in my university years.
In short words, don't worry too much. Look for professional help if this situation is affecting your education or personal life too much.
Have a nice day, and good luck.